windchills were still in the 20s as far south as atlanta and north florida. let's get to this. the coldest air of the season the midwest to the northeast today. look at these windchills you're facing this morning. and as we show you these pictures, incredible pictures of people working in that cold air. bundled in the cold air. mt. washington, new hampshire, an 86-degrees below windchill. now, 24 states, again today have winter weather watches, warnings or advisories. this is the coldest part of this air. and it gets better after this. a lot of people have faced these cold air. and some of the folks, no one knows it better than where our alex perez is standing in chicago. good morning, alex. >> reporter: good morning, sam. right now, the problem here in chicago and in the areas dealing with this extreme cold is how quickly everything is freezing. going to step out of the way here. look at this warehouse behind me here. this building caught fire on tuesday. and authorities are still here trying to extinguish the flames. now, part of the problem is that the water they are using h